{"id":"CVE-2026-3979","details":"A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.","modified":"2026-04-10T05:43:08.834269Z","published":"2026-03-12T04:16:40.440Z","references":[{"type":"WEB","url":"https://github.com/quickjs-ng/quickjs/"},{"type":"WEB","url":"https://vuldb.com/?ctiid.350414"},{"type":"WEB","url":"https://vuldb.com/?id.350414"},{"type":"WEB","url":"https://vuldb.com/?submit.769600"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/issues/1368"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/issues/1368#issue-4004680962"},{"type":"FIX","url":"https://github.com/quickjs-ng/quickjs/commit/daab4ad4bae4ef071ed0294618d6244e92def4cd"},{"type":"FIX","url":"https://github.com/quickjs-ng/quickjs/pull/1370"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/quickjs-ng/quickjs","events":[{"introduced":"0"},{"fixed":"daab4ad4bae4ef071ed0294618d6244e92def4cd"}]}],"versions":["v0.1.0","v0.10.0","v0.10.1","v0.11.0","v0.12.0","v0.12.1","v0.2.0","v0.3.0","v0.4.0","v0.4.1","v0.5.0","v0.6.0","v0.6.1","v0.7.0","v0.8.0","v0.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3979.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"}]}